Improvement in harvesters



J. JANN.

Harvester.

No, 55,304. f lmnted lunes; 1865 UNITED STATES JOHN JANN, OF NEW.

PATENT OFFICEO WINDSOR, MARYLAND.

IMPROVEMENT IN HARVESTERS.

To all whom t may concern Be it known that I, JOHN JANN, of New Windsor,in the county of CarrollI and State of Maryland, have invented certainnew and useful Improvements in Harvesters 5 and I do hereby declare thefollowing to be a full, clear, and exact description ot' the nature,construction, and operation of the same, reference being had to theaeeompan yin g drawings, which are made part of this specification, andin which- Figurc lis a plan ot' a harvester illustrating my invention.Fig. 2 is a rear-end elevation ot' the same. Fig. 3 is a side elevationwith the rightA wheel removed.

Similar letters of reference indicate corresponding parts in the twoiigures.

My said invention consists, iirst, in novel means t'or throwing thecutting apparatus out ot' gear with the axle by which it is driven;second, in a peculiar device for attaching the cutter-bar to the mainframe third, in the arrangement oi' devices for raising and lowering thecutting apparatus 5 fourth, in a device whereby the cutter-bar may bestiffened so as to be adapted to be raised at both ends in passing' overobstructions or in being elevated when the operation is to be suspended.

The following descriptionin connection with the drawings will enableothers skilled in the art to which my invention appertains to fullyunderstand and use the same.

A represents the main frame, and B the cutter-bar. The axle C isintended to drive the cutter-bar through gearing inclosed within themain frame. On the hub ot' each drivin g-wheel D is a ratchet, D,whieh,for the sake of economy and simplicityl of construction, I cast in onepiece with the wheel.

E E are movable ratchets or clutches fitted to slide upon the axle O,and employed in connection with the respective ratchets D D for thepurpose ot causing the axle C to turn with the wheelsD or permit thelatter to turn loosely. thereon without rotating the axle, as occasionmay require.

F F may represent semi-cylindrical or other suitably-shaped slides, eachof which is formed with a iiange,f, Fig. 2, which lits within the groovee of the clutch E. Each slide Fis guided in its movement by theprojection G, and is coniined upon the sleeve C of the axle g.

H is a lever fulerumed upon the main frame at h, and having twodownwardly-projecting pins, h h', one ateach side ofthe fulcrum. Thesepins h it into proper recesses or holes in the outer edges of thesliding bars I I, and under the lateral impulse ot' the lever areadapted to move the bars I in an outward direction, so as to couple orengage the clutches E with the ratchets D.

The slide F and clutch E are connected as above described, so as to movetogether, and the slides are connected to the bars I by means of thebars J. In the adjacent faces of the bars I I are recesses 'i t', whichare in opposition or in line with each other at the same time that theclutches E are engaged with the clutches D. By introducing a key or pininto the recesses it' the parts may be held in gear permanently, or atleast until the wedge or key is removed; but when the latter iswithdrawn from the recesses in the bars I I said bars are acted upon bythe springs K K, which have a tendency to hold the parts out of gear bypressing against the ends ot' the bars, as shown. The springs K arebolted or otherwise attached'to the main frame.

O is a bar, slotted longitudinally at o, and fastened to the linger-beamby means of the screw-bolt P. This bar is adapted to be slid inward tillits end projects under the pivot-bolt M, which attaches the Iinger-beamto the double shear bar N. When the end ot' the bar O is thus projectedinward beneath the pivot-bolt M a stift' joint is made between thecutting apparatus and the double shear bar to which itis connected, sothat on raising the said double shear bar the outer as well as the innerside of the cutting apparatus will be elevated either to pass overobstructions or suspend the operation. The bar N is connected by a hook,Q, and link R to a cogged segment, S, which is pivoted tothe main frameat s.

T is a lever which is attached to androtates a stud-shaft, which carriesa pinion, U, which meshes with the cogs ot' the segment S.

The link It has a slot, r, extending through it in the direction of itslength, and through this slot passes the pin s', which attaches the linkto the segment S. Hence the link which sustains the cutting apparatusallows the latter to rise and fall freely in order to conform toundulations of the earth. The lever T is employed for elevating andlowering' the cutting apparatus.

By drawing the end of the bar O from under 3. The combination of thedouble bar. N, hook Q, slotted link R, segment S, pinion U, and lever T,all arranged and operating as described.

. To the above specification of my improvements in barvesters I havesignedmy hand this 23d day of September, 1865.

JOHN J ANN.

Witnesses:

ALEXANDER A. L. PLANCHE, G. I). SMITH.

